<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./iconfont/iconfont.css">

    <style>
        *{
            margin: 0;
            padding: 0;
            box-sizing: border-box;

        }
        li{
            list-style: none;
        }
        .banner{
            position: relative;
            margin: 100px auto;

            width: 564px;
            height: 315px;
            overflow: hidden;
        }
        .banner img{
            width: 564px;
            border-radius: 12px;
            vertical-align: middle;
        }
        .banner ul{
            display: flex;
        }
        
        .banner .prev,.banner .next{
            display: none;
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            
            width: 20px;
            height: 30px;
            background-color: rgba(0, 0, 0, 0.5);
            
            text-decoration: none;
            color: #fff;
            line-height: 30px;
        }

        .banner:hover .prev,
        .banner:hover .next {
            display: block;
        }

        .banner .prev{
            left: 0px;
            border-radius: 0% 15px 15px 0%;

        }
        .banner .next{
            right: 0px;
            border-radius: 15px 0% 0% 15px;

        }

            /* 圆点 */
        .banner ol {
        position: absolute;
        bottom: 20px;
        left: 50%;
        transform: translateX(-50%);
        height: 13px;
        background-color: rgba(255,255,255,0.3);

        display: flex;

        border-radius: 10px;
        }

        .banner ol li {
        margin: 3px;
        width: 8px;
        height: 8px;
        background-color: #fff;
        border-radius: 50%;
        cursor: pointer;
        }

        /* 橙色的li */
        .banner ol .active {
        background-color: #ff5000;
        }
        
    </style>
</head>
<body>
    <div class="banner">
        <ul>
            <li><a href="#"><img src="./images/banner1.jpg" alt=""></a></li>
            <li><a href="#"><img src="./images/banner2.jpg" alt=""></a></li>
            <li><a href="#"><img src="./images/banner3.jpg" alt=""></a></li>
        </ul>
        <a href="#" class="prev">
            <i class="iconfont icon-zuoce"></i>
        </a>
        <a href="#" class="next">
            <i class="iconfont icon-youce"></i>
        </a>
         <!-- 圆点 -->
        <ol>
        <li></li>
        <li class="active"></li>
        <li></li>
        </div>
</body>
</html>